申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US05079256A1
公开(公告)日:1992-01-07
A compound of the formula (I) or its salt and a process for producing the compounds. The compounds have the effect of dilating neophrovascular tracts; ##STR1## wherein ##STR2## represents the formula ##STR3## wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl; R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino; R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino; R.sup.3 is hydrogen, lower alkyl, or hydroxyl; R is hydrogen or halogen; with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen, A excludes ##STR4## or a salt thereof.
化合物的公式(I)或其盐以及制备该化合物的方法。这些化合物具有扩张新生血管的作用;其中##STR2##表示公式##STR3##,其中R.sup.4是氢原子或低烷基磺酰基;R.sup.1是氢、低烷基、羟基、卤素、氨基或低酰基氨基;R.sup.2是氢、低烷基、羟基、氨基或低烷基磺酰氨基;R.sup.3是氢、低烷基或羟基;R是氢或卤素;但是当R.sup.1为羟基时,不存在所有的R.sup.2、R.sup.3和R都是氢的情况,另外还有一个前提是当R是氢时,A不包括##STR4##或其盐。